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Patching Unpatchable Files
- Anna-Lena Marx
- December 5, 2024
- Embedded , Conferences
In the Yocto world, the .bbappend file is a well-known and documented mechanism for altering recipe files, and an essential part of daily operations. While not common, there are instances where it becomes necessary to modify other file types, such as .inc or .bbclass, which do not offer an equivalent append mechanism. This session will summarize various strategies for effectively handling these file types when patching cannot be avoided.
In my recent presentation at the Yocto Developer Day in Vienna, I mentioned using the KAS patch mechanism for minor modifications to files like .inc or .bbclass, where the Yocto internal overwriting mechanism via .bbappend files does not apply. Initially intended as a helpful side note on how I navigated a few unique situations, this part quickly escalated into the most discussed segment of the talk. Half of the attendees I spoke with found it valuable, while the other half expressed strong objections.
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Yocto on the Edge - Unusual challenges when building not so embedded systems
- Anna-Lena Marx
- October 8, 2024
- Embedded , Conferences
Building embedded systems with Yocto on ARM platforms is a common practice, but when the products move further to the edge and become less “embedded,” new challenges arise. In this session, we will explore the requirements and challenges faced when developing Yocto-based systems for edge computing based on Intel.
We will dive into topics such as provisioning x86-based platforms, securely managing Linux user logins on a read-only root file system with enforced password changes, and implementing A/B updates together with secure boot. Real-world project requirements will be used as a guide to discuss practical solutions and best practices for addressing these challenges.
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